via pdroms:

MobileTetris is a Tetris clone for the iPhone. MobileTetris is currently in beta development. It's in a very playable state right now, but there are still many more features to add!

Changes: Version 0.7.6 had a capitalization error in one of the filenames, leading to rather undesired behavior. Make sure to grab 0.7.6b!

Homepage: http://code.google.com/p/mobile-tetris/